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- Title
Chemical oxidation of Ti–6Al–4V for improved wear and corrosion resistance.
- Authors
Biswas, A.; Srikant, P. V. S.; Manna, I.; Chatterjee, U. K.; Majumdar, J. Dutta
- Abstract
In the present study, chemical oxidation of Ti–6Al–4V has been carried out by dipping it in varying concentrations of hydrogen peroxide (004–008M) for 30 min. Chemically oxidised samples were also subjected to isothermal heat treatment in air at 400°C for one hour followed by slow cooling in the furnace. Chemical oxidation developed an oxide film on the surface of Ti–6Al–4V consisting of Ti2O3 and TiO2 (anatase), the volume fraction on anatase increases with increase in solution concentration. Subsequent heat treatment causes formation of rutile phase. The microhardness of the oxidised surface is increased to 475 VHN as compared to 290 VHN of the as received Ti–6Al–4V. Wear and corrosion resistance were improved following oxidation. It was observed that chemical treatment in 008M hydrogen peroxide solution followed by heat treatment at 400°C led to a maximum improvement in wear and corrosion resistance.
- Subjects
OXIDATION; HYDROGEN peroxide; HEAT treatment of metals; CORROSION &; anti-corrosives; OXIDES; COOLING
- Publication
Surface Engineering, 2008, Vol 24, Issue 6, p442
- ISSN
0267-0844
- Publication type
Article
- DOI
10.1179/174329408X286097